Hopefully the conventional departments will integrate into the new CoMIRS system when it reaches Cape Cod. At the present time it is my understanding that the larger departments on Cape Cod were not "welcome" on the system due to the fact that they might lend more to the saturation of the system during busy periods of time. That said, when things break, it is their fallback. Currently 3 of the 5 800 conventional departments on the Cape are having technical issues, so you will hear them on Zone 04, and likely hear testing on their conventional frequencies.